Date: Tue, 29 Aug 2000 16:55:05 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: dfr@nlsystems.com Cc: freebsd-alpha@freebsd.org Subject: panic very early in boot Message-ID: <14764.7637.838295.31768@grasshopper.cs.duke.edu>
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I just tried to take my UP1000 to -current. Built the world & used
make buildkernel / make installkernel to build the kernel. Sources
were current as of 4am EDT. Plus version 1.2 of busspace.c
I'm seeing a KSP not valid halt caused by taking a memory management
fault very early in the boot process. After editing trap to print out
all the faults it takes, I see this as the very first one (and the one
that starts the spiral of faults in trap/vm_fault)
fatal kernel trap:
trap entry = 0x2 (memory management fault)
a0 = 0xdeadbeeffeedface
a1 = 0x1
a2 = 0x0
pc = 0xfffffc0000628aec
ra = 0xfffffc0000628aa8
curproc = 0
This is coming from:
(gdb) l *0xfffffc0000628aec
0xfffffc0000628aec is in siocnattach (../../isa/sio.c:3127).
3122 * to have the correct value. Also, if we didn't
3123 * just read the speed from the hardware, then we
3124 * need to set the speed in hardware so that
3125 * switching it later is null.
3126 */
3127 cfcr = inb(siocniobase + com_cfcr);
3128 outb(siocniobase + com_cfcr, CFCR_DLAB | cfcr);
3129 outb(siocniobase + com_dlbl,
3130 COMBRD(comdefaultrate) & 0xff);
3131 outb(siocniobase + com_dlbh,
The machine in question is a UP1000 (irongate chipset). Its running
with a serial console..
I'm assuming the problem is with the new busspace. Does the
0xdeadbeeffeedface address mean anything to you?
Thanks,
Drew
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Andrew Gallatin, Sr Systems Programmer http://www.cs.duke.edu/~gallatin
Duke University Email: gallatin@cs.duke.edu
Department of Computer Science Phone: (919) 660-6590
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